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Lab meeting update

Lab meeting update. Samson Phan Sept 24, 2010. In the beginning…. Conclusions. HIC numbers associated with collisions are insufficient to cause concussions HIC & concussions: are they really a good measure? Automotive Laceration scales are too insensitive.

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Lab meeting update

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  1. Lab meeting update Samson Phan Sept 24, 2010

  2. In the beginning…

  3. Conclusions • HIC numbers associated with collisions are insufficient to cause concussions • HIC & concussions: are they really a good measure? • Automotive Laceration scales are too insensitive. • Automotive based injury indices insufficient for robot human collisions

  4. So we built a model… Wassink et al µ = 0.4 µ = 0.8

  5. Bruise Volumes

  6. And a sensor…

  7. Sensor Results Normal 30 degrees • Why similar patterns? • Sensors are spaced too far? • Sensors are not being sampled quickly enough?

  8. Capacitance Leakage?

  9. Capacitance Leakage?

  10. Inertia Coupling 0<x<1

  11. Questions • Why the difference between theory and experiment (if it really exists) • Zero Order Hold? Backlash? • Is there a response rate threshold that is deleterious? • What happens when reaction time is less than collision time? • Does the source of stiffness matter? • Preliminary results suggests so • How do hydraulics/pneumatics (PAMS) behave? (0<x<1) • Initial operating pressure variations

  12. Future Work • Conduct Collision Tests with Adept Setup to see varying effects of stiffness on Inertia coupling • Use HSR arm setup to explore stiffness source effects. • Pneumatics, electromagnetic motors

  13. Experimental Setup How does stiffness affect collision? Adept Setup HSR Setup

  14. Want to know more?HSR meeting @4 pm in Gates

  15. Good Luck Sal!

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